Heart

This is a cross section of the heart with marked concentric thickening of the Lt ventricular wall. Note the corresponding decrease in the ventricular cavity. The LV (Lt) is over 2 cm in thickness (N: 1-1.5 cm). The wt of the heart consequently increase to over the normal of 350 g. some times up to 800 g. Systemic hypertension is a common cause.
Concentric Hypertrophy of Lt V

Pressure hypertrophy due to left ventricular outflow obstruction. The left ventricle is to your right in this apical four-chamber view of the heart.
Left ventricular hypertrophy

Altered cardiac configuration in LVH without and with dilation, viewed in transverse heart sections. Compared with a normal heart (center), the pressure-hypertrophied hearts (left) have increased mass and a thick left ventricular wall, but the hypertrophied and dilated heart (right) has increased mass but a normal wall thickness.
Lt ventricular hypertrophy Vs normal & hypertrophy with dilation